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Tenacious Crack-Sealing Epoxy Grout | SealBoss 4040 LV

Tenacious Crack-Sealing Epoxy Grout
4040 LV Epoxy Resin

SealBoss ® 4040 LV Epoxy Grout Applications

Structural Epoxy Crack Injection
Gravity fed or pressure injection of cracks in structural concrete, masonry, rock, wood.
Seal interior slabs and exterior above grade slabs

SealBoss 4040 LV Epoxy Grout Resin Standard – The Ultimate Multi-Purpose Solution

Introducing the SealBoss 4040 LV: A two-component, 100% solids epoxy resin adhesive, meticulously crafted for superior strength and versatility. Its low-viscosity formulation ensures seamless application, making it the ideal choice for:

High-Strength Structural Repairs
Epoxy Crack Injections
Low and High Pressure Injections
Gravity Fed Epoxy Repairs
Outstanding Bond Strength to many Substrates

Whether you are working on floors, ceilings, walls, or foundations, the SealBoss 4040 LV is your go-to solution for concrete, masonry, and other substrates. Its high quality and moisture-tolerant composition allows for effective grouting in both dry and damp cracks.

SealBoss ® 4040 LV Epoxy Grout Advantages

Easy mix ratio A:B = 2:1 by volume
Advanced strong bonding structural resin
Low viscosity – Deep penetrating bond in structural concrete
Stronger than concrete

SealBoss 4040 LV is our standard, low viscosity, tenacious crack-sealing epoxy grout / resin suitable for most epoxy injection jobs. For super fine crack injection needs please consider our super low viscosity epoxy resins SealBoss 4050 SLV.

We offer a comprehensive selection of epoxy injection equipment and accessories including professional epoxy injection pumps, injection ports, hoses and applicators.

For smaller jobs we provide epoxy resins and other professional grade products in dual cartridges as a convenient alternative to bulk products.

Inquire more about our systems when you call us here at SealBoss. Your representative will be happy to help you out.

Chris Coderre

Regional Sales Manager

SealBoss ® EPOXY

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4050 SLV Epoxy

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Chemical Grouting Leaking Tieback Anchors

Chemical Grouting
Leaking Tieback Anchors

Understanding Tieback Anchors and Their Susceptibility to Leaks

Tieback anchors are essential components in construction and geotechnical engineering, providing lateral support to structures like retaining walls, foundation walls, slopes, and excavations. They are designed to stabilize these structures by transferring loads deep into the ground, preventing shifts and ensuring structural integrity.

However, tieback anchors can become susceptible to leaks under certain conditions. Factors such as high groundwater tables, soil movement, wear and tear, and corrosion can compromise the anchor’s sealing and allow water infiltration. This water intrusion can undermine the anchor’s effectiveness and potentially lead to structural issues, including damage to building foundations and other critical areas.

Chemical Grouting Leaking Tieback Anchors with SealBoss 1510 Water Stop Foam

Addressing leaks in tieback anchors and foundation wall anchors is a common challenge in construction and civil engineering. Fortunately, chemical grouting with products like SealBoss 1510 Water Stop Foam provides an efficient and reliable solution. This guide offers a quick overview of how to seal leaking tieback anchors using high-performance polyurethane chemical grouts.

Why Choose SealBoss Chemical Grouts?

SealBoss Chemical Grouts are specially formulated polyurethane injection foams designed to stop water leaks in concrete and masonry structures. Key benefits include:

Rapid Reaction Time: SealBoss grouts expand quickly upon contact with water, allowing for fast repairs and minimal downtime on site.
Superior Performance in Wet Environments: These grouts work exceptionally well in saturated conditions, making them ideal for sealing tieback anchors exposed to high groundwater levels.
Effective, Long-Lasting Seal: The grout expands to fill cracks and voids, providing a durable, watertight seal that prevents further water intrusion and protects structural integrity.

By utilizing SealBoss Chemical Grouts, contractors and engineers can effectively address leaking tieback anchors, ensuring the stability and longevity of foundational and retaining structures.

A Guide to Sealing Leaking Tieback Anchors with SealBoss Solutions

Effectively sealing leaking tieback anchors is crucial for maintaining the structural integrity of retaining walls, foundations, and other critical infrastructure. Using a professional-grade solution like SealBoss Chemical Grouts can streamline this process and ensure a long-lasting, durable seal. Follow these steps to achieve optimal results:

Locate the Leak
Begin by thoroughly inspecting the area to pinpoint the leak location. Accurate leak detection is essential for efficient grout application and ensures the repair targets the precise area of concern.
Prepare the Injection Site
Once you’ve identified the leak, clean the surface area thoroughly to remove any debris, dust, or contaminants that could interfere with the grout’s adhesion. Next, drill holes for the injection packers directly at the leak site. For most applications, positioning the injection packers in a circular or ring-like pattern around the affected area is ideal, as this allows for uniform grout distribution and thorough penetration of the chemical grout.
Install the Injection Packers
Insert SealBoss high-quality injection packers into the drilled holes. These packers act as secure channels for the chemical grout to flow precisely where needed. Properly installed packers prevent leakage during injection, maximize the effectiveness of the grout, and support high-pressure application, which is often necessary for deep penetration in industrial-grade repairs.
Prepare the SealBoss Chemical Grout
For optimal results, mix SealBoss foam grout with SealBoss 15X Accelerator, following the manufacturer’s precise instructions. This combination provides an accelerated reaction time, making it highly effective for fast-setting repairs. The chemical grout is designed to expand upon contact with water, making it especially suitable for sealing leaks in wet or damp environments common to tieback anchors.
Inject the Chemical Grout Foam
Using a professional-grade injection pump, such as the SealBoss IP495 or the P2002, inject the chemical grout foam into the packers. These pumps are specifically designed for high-performance applications and allow you to control the pressure and flow rate, ensuring the grout penetrates even the smallest cracks and voids. Upon contact with water, the grout expands, creating a durable seal that is both waterproof and flexible, essential for withstanding environmental stressors and ground movement.
Monitor the Repair
After the grout has cured (typically within minutes, depending on conditions), inspect the area to confirm the leak has been sealed. SealBoss Chemical Grouts offer visible and immediate expansion, allowing you to assess the success of the repair on-site. For added assurance, consider performing a pressure test on the repaired tieback anchor. If any leakage remains, simply repeat the injection process to address the remaining gaps until the leak is fully sealed.

Conclusion

Sealing leaking tieback anchors doesn’t have to be a complicated or time-consuming task. By using SealBoss Chemcial Grouts and SealBoss’s robust injection systems, contractors and engineers can effectively address and prevent leakage in tieback anchors, ensuring structural integrity, longevity, and enhanced performance in challenging conditions. SealBoss solutions are designed for durability, allowing for confident, high-quality repairs that stand the test of time.

Get in Touch with SealBoss for Professional Chemical Grouting Solutions

SealBoss has a long-standing reputation in leak sealing, concrete repair, and waterproofing solutions. With SealBoss products, you can achieve professional results that enhance the lifespan and resilience of critical structures—whether you’re working on commercial projects, retaining walls, or foundational repairs.

Contact our team today for expert advice on choosing the right chemical grouting products and equipment for tieback anchor repairs. Let SealBoss help you achieve effective, long-lasting results with our trusted grouting solutions.

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Leaking Crack Repair

Coached by a Top Industry Professional

In the world of construction and maintenance, “leaking crack repair” is a term that frequently emerges, particularly when addressing structures that contain water or are vulnerable to moisture and water intrusion. Addressing these cracks swiftly and efficiently is vital for the structure’s safety and durability.

Sealing the Future – Preserving the Past
Since 1988

Leaking Crack Repair

Sealing the Future – Preserving the Past
Since 1988

The Need for Crack Injection Training

A prominent general contractor, who usually subcontracts such tasks, expressed the need for immediate crack injection training on a specific jobsite. Their primary aim was to acquire the expertise for smaller projects, allowing them to handle leaking crack repair internally on certain timely projects. This proactive approach not only saves time but also ensures that minor issues can be addressed before they escalate.

A Case Study: Water Treatment Tank Crack Sealed

Scope: New Concrete Tank – Water Test Failure – Asses and Seal

The facilities in question comprised three holding cells, separated by two poured-in-place division walls. During a leak test on the outer two tanks, visible cracks were detected. These cracks, deemed non-structural for repair purposes, showed signs of dampness and minor leaks, emphasizing the need for immediate leaking crack repair. Pressure crack injection with a hydrophobic polyurethane expanding water stop foam utilizing an electric injection pump and mechanical injection packers was specified as the method of restoration.

The Repair Process

Materials Used: SealBoss 1570, SealBoss 15x
Additional Tools: SealBoss 13-60S packers, SealBoss 495 Injection Pump, Hammer Drill w/ 12” x ½” bit, PPE

For training purposes, a weeping crack was chosen for repair. This crack, though narrow, spanned about 10 feet in height and meandered across the wall. Given that the newly constructed wall was 14 inches thick, the repair strategy involved guiding the team to drill 5 to 7 inches out from the crack. The drilling was done at a 45-degree angle, aiming back towards the crack, employing the crack stitch method.

Depth of Intersection: The further the drill hole is from the crack, the deeper it will intersect the crack within the structure. This results in a more profound point of injection.

Considerations for Thicker Structures: A deeper injection point is often preferred in thicker structures. However, the length and reach of the drill bit play a crucial role in determining the optimal distance for the drill hole.

Avoiding Dead-End Drill Holes: A drill hole that misses the crack won’t facilitate the injection of the chemical grout into the structure. Such holes are termed “dead-end drill holes” and are ineffective for the purpose of grout injection.

In summary, while determining the spacing of drill holes, it is vital to balance the desired depth of injection with the capabilities of your drilling equipment to ensure effective grout injection.

To ensure precision, the placement was set parallel to the fissure. A 0.5-inch masonry bit, attached to a hammer drill, was used for the drilling process. Once the clean, crack-intersecting holes were established, SealBoss 13-60S heavy duty steel injection packers were installed.

The repair commenced from the bottom, progressing upwards. The SealBoss 495 injection pump, paired with the SealBoss 1570 NSF/ANSI/CAN 61 drinking water contact certified chemical grout, was used for the leaking crack repair. As the repair proceeded, water and material were observed exiting the substrate. This was a positive sign, indicating effective penetration and successful stopping of the water penetration and sealing of the crack.

Final Thoughts

Leaking crack repair is an essential aspect of maintaining the structural integrity of buildings and facilities. With the right knowledge, tools, and materials, such as those provided by SealBoss Corp., even the most challenging cracks can be effectively addressed. Whether you’re a contractor looking to expand your skill set or a facility manager aiming to maintain your structures, understanding the nuances of leaking crack repair is invaluable. Our SealBoss Water Stop Specialists are always ready to assist you.

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Waterproofing Parking Structure Cracks

Waterproofing
Parking Structure Cracks

Acrylic
Gel
Injection

WATER

On Earth life cannot exist without it and at the very same time water can take life away. This principle resonates for the industry of construction as well. More specifically, this idea is a direct parallel to concrete and its make up.

Without water, concrete cannot chemically transform and become the fluid, placeable and pourable material that it is. However, once cured, nuisance water within concrete structures can internally destroy its structural integrity by corroding reinforcing steel, eventually rendering the concrete structure useless. Water, in sum, is perhaps one of the most simple and essential yet potentially destructive forces on our planet.

Waterproofing Parking Structure Cracks

At a parking structure in Burlingame, California, the shotcrete structure and mat slab were exhibiting signs of unwanted ingress from the water table outside of the building.

While evidence of cracking was not necessarily present, efflorescence on the interior surface of the walls told the tale that the migration of unwanted groundwater was presenting a problem.

The structure is referred to as an Automated Parking Structure where building tenants can retrieve their automobiles by entering a code at the entry point to the structure and have their vehicles essentially “delivered” to them once the internal workings of the structure retrieve the vehicle. It becomes obvious from this description of the project that water has no place in the intricate electronic systems that comprise this facility but more so on or near the vehicles that live in this structure. Something needed to be done and a certified specialized contractor was called in to get the water mitigation handled.

The construction of the concrete is something to note, particularly with respect to the steel in place at a double mat (2 layers within the walls) of #9 and #11 bars at a spacing of 24” on center each way. This reinforcing steel is a sturdy configuration –and a lot of steel — all of which is susceptible to corrosion if water is present after the shotcrete’s cure out.

That amount of steel, if subject to corrosion, could, over time lead to spalling and eventually an overall degradation of the structure if left unaddressed.

Something Needed To Be Done

The SealBoss 2400 super low viscosity acrylic gel injection system was the answer for waterproofing parking cracks permanently.

The 2400 system is extremely well suited to seal structures with very fine and hairline cracks and fissures.

The 24’ high walls needing injection stood atop a 6’ thick cast-in-place mat slab and were +/- 24” thick. Extending from the tops of the walls to grade were 4’ high cast-in-place ring beams. By drilling into the walls 22” (not all the way thorough) and setting mechanical packers into the drilled holes, the delivery of the SealBoss 2400 system was now possible to as was its migration within the substrate.

The environmentally friendly SealBoss 2400 offered outstanding penetration properties similar to plain water, allowing it to permeate throughout the wall’s network of fissures, no matter how tight and narrow. In some instances, the material would shoot out of pinholes and cracks barely visible to the naked eye several feet away, further showcasing its ability to navigate the concrete’s crack and pore network thoroughly and effectively. Once gelled, the material prevented unwanted water migration to reinforcing steel within the substrate.

Mission accomplished

If there are any questions about this project in need of answering please do not hesitate to contact us, we are here to assist in any way we can. Always remember to work safely by wearing eye protection and gloves when handling any type of chemicals. We hope you enjoyed our review of the project outlined above and encourage you to explore our website to learn more about our vast array of waterproofing solutions for concrete structures.

Video – Acrylate Gel Injection SealBoss2400
Super Low Viscosity Penetration Properties

– See How SealBoss 2400 Pushes through
Finest Cracks and Fissures
– See Port to Port Injection Technique
– See Product Travel of Several Feet

SealBoss 2400 Gel Injection System

Links to Leak Sealing with SealBoss Acrylate/Acrylic Super Low Injection System

SealBoss Acrylate/Acrylic System

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Acrylate

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Efflorescence and Leaks

Efflorescence – Indicator of Water Problems in Structures

Efflorescence, at first glance, may seem like a simple aesthetic issue. It presents itself as a white or occasionally vibrant and colorful, chalky residue on walls, especially around cracks and joints. This substance can evolve, often resembling delicate, hair-like filaments. Yet, beyond its surface appearance, efflorescence strongly signals the presence of a water leak.

A crack with efflorescence built-up has to be considered a leaking crack.

What exactly is efflorescence?

Efflorescence is the result of a variety compounds that have been dissolved and transported by water. When this water reaches the surface of materials like concrete or masonry, it evaporates, leaving behind minerals, metals and inorganic compounds, such as calcium hydroxide which interacts with atmospheric carbon dioxide to form fine calcium carbonate crystals.

The result is the characteristic residue which is mostly greyish or white. However, it can sometimes appear colorful if the water causing the efflorescence contains minerals or compounds that produce colors when they crystallize. Copper salts often yield blue or green efflorescence. Similarly, iron salts can lead to yellow, brown, or reddish hues, while manganese can give rise to pink or purple shades.

The presence of these or other metal ions in the water can lead to colorful efflorescence. These ions may come from the soil, water supply, or even from the building materials themselves. Therefore, colorful efflorescence not only indicates a moisture issue but could also point to the presence of specific minerals or contaminants in the environment.-

While efflorescence itself might not be harmful, it is a beacon signaling a potential moisture problem. As water continues to seep into building materials, it does not just evaporate from the surface. The moisture can be absorbed deeper into the material, leading to a process known as wicking. Over time, this persistent moisture can compromise the structural integrity of the building materials.

For inspectors and concrete repair contractors alike, recognizing efflorescence is crucial. It is not just about identifying a water leak; it is about understanding the capillary forces at play and the distribution of water within the structure that will cause the damage. By educating their clients about efflorescence, inspectors can provide valuable insights into potential problems that already may exist, even when the structure appears to be dry on the outside.

In summary, efflorescence is an indicator for moisture problems in a structure, even when it appears to be dry at the time of inspection. It forms when water with dissolved salts evaporates from concrete or masonry surfaces, leaving a white, greyish or even colorful residue. It is a a clear signal of deeper moisture problems, past and present, that can have long-term implications for the structural health of a building.

When it comes to polymer crack injection and structural repairs, understanding and addressing the root causes of efflorescence is essential.

Efflorescence and Crack Injection Repair
A Case Study at International Airport's Reservoir

Introduction
We know that efflorescence is a clear indicator of moisture issues within a structure. Its presence can signify past leakage, even when the surface appears dry. Addressing efflorescence build-up and active leaks can be crucial for the longevity of concrete structures.

This short case study highlights a repair project at an International Airport, highlighting the solutions in association with efflorescence and crack injection repair.

Project Overview
The Reservoir spillway structure at the International Airport required significant restoration and rehabilitation. The contractor was tasked with chemical grouting as part of this extensive project. The objective was to clean up all compromised concrete, crack inject all areas of present and past water leakage, patch it, and re-caulk all cold joints.

Identifying the Problem

Visible water infiltration and signs of efflorescence on cracks and joints were the primary concerns. Efflorescence around cracks and joints indicates past leakage, even in the absence of active water seepage at the time of inspection, and needs to be addressed.

The source of water intrusion was identified as rain runoff, which led to the oversaturation of the built-up and back-filled sections adjacent to the spillway walls.

Proposed Solution
The engineer recommended injecting the affected cracks and joints with a moisture-activated hydrophobic foam. This foam was specifically designed to address areas showing signs of efflorescence and visible water infiltration.

Execution
Custom scaffolding was erected to facilitate the repair process. The contractor’s certified crew utilized the SealBoss P2002, a portable high-pressure injection system capable of overcoming the hydrostatic and physical resistance forces within the wall, displacing moisture, and injecting the SealBoss 1510 Water Stop and Leak Seal Foam at the appropriate pressure and volume. Given that the concrete wall was approximately 12 inches thick, the SealBoss 13-100AL Evolution Packers were strategically installed by drilling directly into the cracks.

This approach was chosen based on the concrete’s quality to minimize the risk of spalling due to injection pressures. Each packer was reinjected as deemed necessary to ensure a comprehensive and durable seal. In many instances, the injected material traveled through honeycombed concrete, reaching areas several feet away from the injection point.

Whenever this happened, the injection was paused until the material reached a state of cure to ensured that subsequent injections would follow a new path of lesser resistance within the crack structure’s capillaries.

Results
The injection crew successfully halted the water intrusion well within the specified time frame. This efficiency meant that the reservoir could return to its regular levels much quicker than initially anticipated.

Note
As water may find its way to areas beyond the initial injection repair, there might be a future necessity for spot treatments in previously dry regions.

Conclusion
Efflorescence around cracks and joints, is a clear indicator of leakage, even if dry durning inspection. It often is a telltale sign of deeper structural problems.

The Reservoir project at the International Airport serves as a testament to the importance of timely intervention and the use of advanced techniques like crack injection repair. By understanding and addressing the root causes of efflorescence and water intrusion, structures can be preserved and protected for the long term.

Crack Injection Tools & Accessories

Crack Injection Tools & Accessories: Your Ultimate Source for Professional-Grade Solutions

As a leading supplier of concrete crack repair solutions, we are excited to offer an extensive selection of crack injection tools and accessories designed to meet the needs of both low and high-pressure injection systems.

Our product line is engineered to support a wide range of project requirements, ensuring that whether you’re working on large-scale commercial projects or smaller residential repairs, you have access to the tools you need for success.

From experienced contractors to first-time repair professionals, our comprehensive range of high-quality components ensures that your crack repair toolkit is fully stocked, enabling you to execute foundation crack repairs with confidence and precision

Why Choose Our Crack Injection Tools & Accessories?

Versatile Solutions: We cater to both low and high-pressure injection systems, providing flexibility for a variety of applications, from minor cracks to significant structural repairs.
High-Quality Components: Every item in our product line is crafted with durability and efficiency in mind, giving you the tools you need for successful, long-lasting repairs.
Suitable for All Experience Levels: Whether you’re a seasoned professional or tackling crack injection for the first time, our tools are designed for ease of use without compromising performance.

Elevate your crack repair work with our Crack Injection Tools & Accessories – because successful foundation restoration starts with having the right tools.

Pumps

Injection Lances / Needles

Applicators

Hose sets

Crack Injection Hand Tools

Injection Packers

Couplers / Fittings

Surface Ports

Injection Tube System

Static Mixers

SealBoss Seal Oakum

Crack Injection Tools & Accessories – Dependable Solutions for Every Project

At the core of our offering is a commitment to providing reliable and effective crack injection tools and accessories that ensure your repairs stand the test of time. We recognize that no two projects are the same, which is why our range has been carefully curated to meet the diverse requirements of low and high-pressure injection systems.

Regardless of your level of experience, our tools are engineered to help you achieve professional results. From injection ports to specialized pumps and accessories, each item is designed to make the process smoother, more precise, and ultimately more successful.

Unmatched Technical Support

In addition to offering premium products, we are dedicated to ensuring you have the support you need to use them effectively. Our expert technical support team is available to provide guidance, answer any questions, and help you make informed purchasing decisions. Whether you need advice on selecting the right tools or troubleshooting during the repair process, we are here to ensure your foundation restoration is completed with the utmost precision and efficiency.

Your success is our success, and we stand behind every product we offer with unparalleled after-sales support. Trust us to help you achieve flawless crack repairs, every time.

Start your foundation restoration journey with our Crack Injection Tools & Accessories — because lasting success begins with the right tools.

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Injection Tube System

Injection Tube System / Injection Hose System

What is the Injection Tube System?

The Injection Tube System is a specialized grout delivery mechanism designed to seal cold and construction joints in concrete structures effectively. It is predominantly used in new construction projects where fresh concrete or shotcrete is applied adjacent to existing, cured concrete surfaces, resulting in the formation of a cold joint. By installing the injection tube prior to pouring the new concrete, the system facilitates the precise injection and distribution of resins and grouts into the cold joint after curing. This process provides an immediate and permanent seal, enhancing the structural integrity and waterproofing of the joint.

Key Advantages:

Proactive Sealing Solution: Allows for the treatment of potential leak paths before they become problematic.
Enhanced Durability: Improves the long-term performance of the structure by preventing water ingress and related deterioration.
Efficient Installation: Integrates seamlessly into the construction workflow without significant additional labor or time.
Versatility: Compatible with a variety of sealing materials, such as polyurethane resins and acrylate gels, to suit specific project needs.

By employing the Injection Tube System, engineers and contractors can ensure that cold and construction joints are securely sealed, thereby extending the lifespan of the structure and reducing the need for future maintenance or repairs.

SealBoss Injection Tube System: Advanced Sealing Solution for Construction Joints

Designed around a solid core, perforated PVC Tube.

The SealBoss Injection Tube System is engineered around a solid-core, perforated PVC tube, providing a robust and reliable conduit for sealing materials in concrete construction joints.

Installation and Waterproofing

Installed within joints prior to the pouring of new concrete, the injection tube proactively waterproofs and seals any cracks or voids that may be present. This system enables the creation of permanent, watertight joint seals, enhancing the structural integrity and longevity of the construction.

Easy to install and reasonably priced – The SealBoss Injection Tube System simplifies the job and provides for watertight joints.

SealBoss Injection Tube

The SealBoss Injection Tube Type 2 features a double-woven membrane that provides superior protection for the inner tube space against water and debris infiltration. A clean inner tube is crucial for optimal injection results, and this design ensures the injection pathways remain unobstructed.

Re-Injectable Applications

For applications requiring a re-injectable system, the SealBoss Injection Tube System can be used in combination with SealBoss® 2400 Acrylate Gel. This combination allows the injection tube to be flushed with water before and after the product sets, enabling multiple injections if necessary. The system’s compatibility with micro-fine cement injections further enhances its versatility, accommodating a wide range of sealing needs.

SealBoss Injection Tube Advantages

SealBoss Injection Tube Type 1 and Type 2 to suit specifications & application requirements
SealBoss ® Injection Tube Type 2 – Double membrane protects tube best from infiltration
Deep penetration water stop seal
Will not fold or crush with concrete weight
Can be injected under flowing water
NSF potable water applications possibles

Applications

Cold Joints.
Expansion Joints.
New and Retrofit Construction
Tunnels, Parking Garages, Slurry Walls, Pipe Joints

The SealBoss Injection Tube System: Efficient and Easy-to-Install Solution for Watertight Cold Joints

The SealBoss Injection Tube System is a highly efficient and user-friendly system designed to create durable, watertight cold joints in concrete structures. Cold joints —formed when fresh concrete is poured next to already-cured concrete— can be particularly vulnerable to water infiltration and stress-induced cracking. The SealBoss Injection Tube System effectively addresses these challenges by sealing the joint areas where leaks are most likely to develop.

A well-known characteristic of concrete is shrinkage while curing. Stress caused during this time and temperature changes provoke the development of small cracks and fissures.

Several design and reinforcement techniques help to control this effect, but cannot control them completely. Fine cracks of sometimes less than 0.1 mm are inevitable. These cracks are considered normal and generally do not cause any problems. However, at cold joints, the tendency to form larger cracks cannot be reduced.

Since old and new concrete do not bond together homogeneously and do not form a monolithic concrete body, stress cracks concentrate mainly in these areas. They easily conduct water and may cause severe damage.

The SealBoss Injection Tube System for sealing cold joints utilizes the natural tendency of concrete to form cracks. A special tube system is installed at the joint where leaks are most likely to occur. The system allows resin injection directly into the joint through a protected porous tube after completion of the structure. The resin penetrates through the perforation of the tube and fills the cracks and voids of the cold joint area thereby sealing the structure.

To be effective, the system must have certain properties. The tube must be sturdy enough to withstand the high pressure of placed concrete and it must resist concrete slurry penetration. On the other hand the injection resin must be able to penetrate the hose at a moderate injection pressure. The installation and injection process must be suitable for construction sites. The SealBoss Injection Tube System is designed to meet these requirements.

Injection Tube System Installation

Before pouring the new concrete the tube shall be attached to the existing surface as tight as possible and usually towards the middle of the future cold joint using suitable clips or by attaching it to the existing rebars. It is crucial that the hose is tightly fixed in the center of the joint area so that it can neither move nor lift during the concrete placement. Six to twelve inches between clips are typically recommended.

The hose must be placed in a manner that it will not touch the outside surface of the structure at any point. To allow sufficient injection pressures, the maximum length of injection tube should not exceed 30 feet.

Conclusion

The SealBoss Injection Tube System offers a sophisticated and reliable solution for waterproofing construction joints in concrete structures. Its proactive design, ease of installation, and adaptability make it an essential tool for engineers and contractors aiming to enhance the durability and integrity of their projects. By preventing water ingress and allowing for straightforward maintenance, it contributes significantly to the longevity and safety of infrastructure worldwide.

SealBoss Injection Tube System

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TUBE

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Injection Tube Type 2

Water Tight Cold Joints and Pipe Joints

What is an Injection Tube?

Injection Tube Systems, also known as Injection Hose Systems, are essential tools used to seal structural and cold joints in below-grade concrete structures like tunnels, tanks, and parking garages. These systems play a critical role in maintaining the integrity of concrete constructions by preventing water infiltration.

Cold joints form when new concrete is poured against existing cured concrete, creating seams that can become pathways for water migration under hydrostatic pressure. If left untreated, this water infiltration can lead to concrete deterioration, rebar corrosion, and significant infrastructure damage.

The SealBoss Injection Tube functions as an efficient delivery system for injection resins and grouts. It channels these sealing materials directly into concrete joints, cracks, voids, and honeycombs, effectively sealing potential leak paths. By proactively addressing these vulnerabilities, Injection Tube Systems help extend the lifespan of concrete structures and protect them from water-induced damage.

Watertight Confidence with SealBoss

— Protecting Concrete from the Inside Out —

SealBoss Injection Tube Type 2: Advanced Solution for Sealing Concrete Cold Joints

The SealBoss Injection Tube Type 2 is an innovative system designed to create watertight seals in cold joints of poured concrete structures. Constructed with a specially designed perforated plastic core tube and two independent woven membranes, this injection tube prevents the infiltration of concrete particles and contaminated water during and after the concrete pour.

Under pressure injection, the woven membranes ensure an even distribution of injection resin along the tube and into the cold joint.

The flexible nature of the Injection Tube Type 2 allows it to conform to uneven substrates and navigate corners, providing a comprehensive seal in complex structural layouts.

Understanding Cold Joints in Concrete

In concrete construction, each new pour onto existing cured concrete forms a cold joint—a point of low cohesion due to the lack of chemical bonding between the pours. These joints are vulnerable to water infiltration driven by hydrostatic pressure.

Additionally, concrete shrinkage introduces stress that can lead to cracking and erosion over time, exacerbated by fluctuations in weather and temperature.

The SealBoss Injection Tube Type 2 System: A Primary Water Stop Solution

By installing the SealBoss Injection Tube Type 2 as a primary water stop system and subsequently injecting it with SealBoss Resin, a monolithic seal is formed within the cold joint.

This process not only seals the joint but also penetrates fine cracks and fissures, effectively preventing future water migration and enhancing the structural integrity of the concrete.

Applications

Cold Joints: Sealing joints between successive concrete pours.
Expansion Joints: Accommodating structural movement while preventing water ingress.
Structural Joints: Enhancing the durability of joints.
Replacement for Traditional PVC Water Stop Systems: Offering a more effective and economical alternative.
Primary Waterstop System: Serving as the first line of defense against water infiltration.

Advantages

Economical Water Stop System: Cost-effective solution for sealing joints.
Simple Installation: User-friendly setup reduces labor time and costs.
Compatibility with Various Injection Resins: Adaptable to different project requirements.
Creates a Monolithic Water Stop Seal: Ensures a continuous barrier against water.
Suitable for Potable Water Applications: NSF-certified injection grout allows for safe use in drinking water structures.
Effective on Honeycombed and Uneven Concrete Substrates: Adapts to imperfections in the concrete.
Withstands High Concrete Weight: Durable under substantial loads.
Injectable in Dry or Flowing Water Conditions: Versatile for various environmental scenarios.
Good Chemical Resistance: Resilient against a variety of chemicals.
Repeated Injections: Under certain conditions with use of acrylate gels possible.

Conclusion

The SealBoss Injection Tube Type 2 system is an essential product for creating watertight cold joints in poured concrete structures. Its advanced design and ease of installation make it a superior choice for professionals seeking reliable and long-lasting water stop solutions. By effectively sealing cold joints and accommodating structural complexities, it plays a critical role in preserving the integrity and longevity of concrete infrastructures.

Injection Tube / Injection Hose System Type 2 Water Stop

If you would like more information about our extensive range of injection equipment and accessories, please contact us at SealBoss. Our knowledgeable representatives are eager to assist you with any inquiries. We provide on-site support and training for all SealBoss System Solutions to ensure the success of your projects.

When you call, please ask for your technical sales representative—we are ready to help!

SealBoss Cold Joint Water Stops

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Hydrophobic versus Hydrophilic Polyurethanes

Hydrophobic vs Hydrophilic Polyurethanes

Injection Foams, Resins and Gels

Introduction

Understanding the technical distinctions between hydrophobic and hydrophilic polyurethanes is essential for professionals in the concrete repair and sealing industry. These two types of polyurethane chemical injection grouts exhibit unique behaviors with water: hydrophobic resins repel water, while hydrophilic resins absorb it. This key difference significantly influences their use in various concrete repair and sealing applications. Our guide offers a straightforward comparison to help you select the appropriate material based on the specific requirements of your project.

Hydrophobic versus Hydrophilic Polyurethanes and Acrylic Chemical Grouts Explained

Polyurethane chemical injection grouts can be broadly categorized into two types: hydrophobic and hydrophilic.

The primary distinction between hydrophobic and hydrophilic polyurethane resins designed for injection lies in their interaction with water. Hydrophobic injection resins repel most of the water, whereas hydrophilic injection resins absorb it during their reaction.

Despite their varied reactions to water, both hydrophobic and hydrophilic injection resins are highly effective for sealing and repairing gaps, cavities, and leaks in concrete structures. However, choosing one over the other is not arbitrary; it largely depends on the specifics of the application and the nature of the issue that needs addressing.

By understanding the distinct properties of each material, you can determine the best fit for your particular situation and application.

Hydrophobic Polyurethanes

The term “hydrophobic” comes from the Greek words “hydro” meaning water and “phobia” meaning fear, resulting in a material that repels water. In the case of hydrophobic grouts, they have little tendency to absorb water into their structure.

Hydrophobic, water-activated polyurethane foams , also known as water blown polyurethanes, need just a tiny amount of water to set off the reaction, leading to polymerization and expansion. During the process of polymerization, a small proportion of water interacts with the polyurethane resin, which produces carbon dioxide gas. This gas expands the foam, leading to the creation of a compression seal in a confined space. Any surplus water is forced out during this process.

After curing, hydrophobic foam grouts maintain their shape, size, and volume without being affected by dry cycles within the substrate. Hydrophobic grouts, once cured, produce a foam of varying rigidity and flexibility. Their high foaming property allows for significant expansion in volume, filling large voids with minimal material. This expansion can reach up to 40 times the initial volume.

Single Component Hydrophobic Water Stop Foams
Water stop and leak-sealing foam grouts are usually available as a single component material, along with an accelerator that can regulate expansion rates, induction, and cure times. These hydroactive hydrophobic foams share similar characteristics. The reaction is initiated only by water or moisture, but once cured, the product remains unaffected by moisture and maintains a constant volume. Since water is not part of the foam structure, the cured material is not affected by water or dryness and does not shrink or swell. These products are also not affected by freeze/thaw and wet/dry cycles.

Characteristics
Cured Product: Rigid, Semi-Rigid, Flexible Foam
Reactive Mechanism: Requires Moisture / Water
Accelerator Adjusted: Yes
Elongation Properties: Up to 250%
Wet/Dry Cycles: Essentially Not Affected
Adhesive Bond to Substrate: Good
Application Equipment: Single Component

– SealBoss 1510
– SealBoss 1570
– SealBoss 1570LV
– SealBoss 1500
Dual Component Hydrophobic Fill and Lift Foams
Dual component foam grouts offering higher structural strength, very short reaction time, and good rigidity are available for void filling and slab lifting applications. These are polyurethanes that do not require any external water to react, but will react in dry and wet environments.

Characteristics
Cured Product: Rigid Foam
Reactive Mechanism: No external Water required
Accelerator Adjusted: No
Elongation Properties: Rigid
Wet/Dry Cycles: Essentially Not Affected
Adhesive Bond to Substrate: Good
Application Equipment: Two Component, Plural Component

– SealBoss 1640 / 1620
Dual Component Hydrophobic Super Low Viscosity Resin
The dual-component injection resin cures into a non-cellular and flexible product. It has excellent penetration properties in fine and hairline cracks and has an adjustable reaction time. Unlike some other resins, this two-component polyurethane resin does not require external water to initiate the reaction. It can react in both dry and wet environments.

Characteristics
Cured Product: Non-cellular flexible Leak Sealant
Reactive Mechanism: No external Water required
Accelerator Adjusted: 1400 Catalyst
Elongation Properties: 100%
Wet/Dry Cycles: Essentially Not Affected
Adhesive Bond to Substrate: Good
Application Equipment: Single Component, Two Component

– SealBoss 1403 SLV

Hydrophilic Polyurethanes and Acrylics (Acrylates)

The term “hydrophilic” comes from the Greek words “hydro” meaning water and “philia” meaning love, referring to a material that readily absorbs water into its structure and can form gels. Hydrophilic grouts absorb water molecules during the reaction and polymerization, resulting in a highly flexible product.

These grouts can accommodate movement during expansion and contraction cycles. While hydrophilic grouts may dehydrate and shrink to some extent based on the amount of water absorbed, in most applications and environments, the surrounding concrete or soil’s moisture content and humidity are typically high enough to keep shrinkage to a minimum. Hydrophilic resins can achieve excellent bonding with wet concrete as they penetrate deeply into the pores and hairline cracks.

Single Component Hydrophilic Foam /Gel
Water initiates reaction and either forms a foam or gel based on water absorption. The product is capable of absorbing and incorporating water post cure, thereby swelling and forming a waterproofing flexible gel or foam.

Does FlexGel Hydrophilic Resin Shrink in the Absence of Water when used for Crack Injection?
When used as a single component injection grout, and without water mixed into the product prior to crack injection, FlexgGel will reject excess water similar to a hydrophobic polyurethane foam grout – resulting in a cured product of low water content. FlexGel Injection Rubber product will perform in line with the hydrophobic grouts. Please refer to data sheet for details.
Characteristics
Cured Product: Foam or Non-cellular flexible Gel
Reactive Mechanism: Requires Moisture / Water
Accelerator Adjusted: No
Elongation Properties: 100% to 1000% (Foam or Gel reaction)
Wet/Dry Cycles: Water loss and contraction in dry cycles — based on initial water content
Adhesive Bond to Substrate: Excellent
Application Equipment: Single Component, Two Component
– SealBoss FlexGel
Plural Component Hydrophilic Acrylic / Acrylate Gel
Multi component product where water is incorporated in large amounts to form a highly flexible gel. Super low viscosity, poly acrylate gel with accelerator. The product offers outstanding penetration properties similar to plain water. Used for Tunnels, Mining, Curtain Injection.

Characteristics
Cured Product: Flexible Gel
Reactive Mechanism: Water added to mixture
Accelerator Adjusted: Yes
Elongation Properties: 250%
Wet/Dry Cycles: Water loss and contraction in dry cycles
Adhesive Bond to Substrate: Very good
Application Equipment: Multi Component, Plural Component Gel Pump
– SealBoss 240 SLV SealGel Acrylate

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Learn More
We encourage you to contact us at 714-662-4445 if you have any queries or require assistance. Alternatively, you can request to be contacted through our website. Our team of knowledgeable and experienced technical representatives can provide on-site support upon request, and we are dedicated to helping you find the best solution.

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SealBoss Curtain Injection

Bladder / Curtain Injection – Curtain Wall Grouting Method

Introduction

Bladder or Curtain Injection is a specialized method used to seal below-grade block and concrete wall structures by forming a protective membrane through the permeation and consolidation capabilities of hydrophilic and hydrophobic grouts. Utilizing the SealBoss Leak Sealing Cube for training, contractors gain an intricate understanding of the injection process and grout behavior. This hands-on approach, which allows observation of the process from the soil side of the wall, prepares professionals for effective on-site applications, ensuring thorough and lasting waterproofing solutions.

Curtain Injection Injection Training with a SealBoss Leak Sealing Cube

The primary objective of the curtain injection method is to effectively seal below-grade block and concrete wall structures by leveraging the advanced membrane-forming, permeation, and consolidation capabilities of hydrophilic and hydrophobic injection grouts. This process ensures long-lasting waterproofing, even under challenging conditions where traditional methods may fail.

This specific training for curtain injection is conducted using the SealBoss Leak Sealing Cube, a sophisticated version of our mock-up designed to replicate real-world scenarios. The Cube offers contractors and engineers a detailed insight into the intricacies of the injection process and the dynamic behavior of chemical grouts under varying conditions. Equipped with Plexiglas cross-sections, the Cube allows trainees to observe the injection process from the ‘other side’—a perspective typically hidden during actual on-site curtain grouting. This unique visual aid is invaluable in understanding how the grout permeates and consolidates within the substrate, forming an effective waterproof membrane.

By closely following the grout’s interaction with the positive soil-side behind the wall, trainees develop a comprehensive understanding of the injection method and technology. This hands-on experience is critical for mastering the application of these advanced materials, ensuring successful outcomes in both routine and complex waterproofing projects. The ability to visualize and understand these processes in a controlled environment prepares professionals for the challenges they will face on the job site, ultimately leading to more effective and reliable sealing solutions in the field.

Procedure Outline

Identify the water source and pattern of moisture intrusion. Most block, stone, and brick leaks are caused by failed positive side membranes. Block walls are often unfilled which also creates voids and pockets for water intrusion. Drill Grid Pattern Drill 3/8 or 1/2 inch holes along the water marks at 2 feet intervals. Moving up the wall, continue to space the holes at 2 feet intervals creating a grid pattern of injection holes as seen in the image. These drill holes are to penetrate the substrate at full depth creating a channel in the wall through which chemicals can be injected.

Packer Install

Once the grid pattern is created, mechanical packers may be inserted into each one. In the case of block walls that are not filled adequately, longer packers are recommended providing a full length channel which ensures that material reached the back side of the wall. it is not recommended to simply fill the blocks with materials – block wall curtain injections require material travel through the entire wall. In the case of older and disturbed stone or brick structures, however, it is also common to inject the structure itself as seen to the right.

For high volume applications, Plastic Button Head Packers are available.

Injection Products and Pumps

In today’s focus, we highlight the SealBoss ® 1510 Curtain Injection Foam and SealBoss ® 15X Accelerator. The single component SB 1510 chemical injection grout is catalyzed with SB 15X Accelerator at variable percentages to either create low foaming expansion or high foaming expansion properties, with the accelerator dosage varying between 2 % to 25 %.

epending on site-specific needs, a selection of products is available, including the hydrophobic SealBoss 1510 / 1570 Foam, SealBoss FlexGel hydrophilic polyurethane gel, or SealBoss® 2400 SLV acrylic gel, are available.

Application Considerations

Because backfill and soil consolidation behind the structures are often unknown, applicators must monitor flow rates and material consumption closely.

Given the often unpredictable nature of backfill and soil consolidation behind structural walls, it is imperative for applicators to closely monitor flow rates and material consumption. In cases where significant voids are expected, the use of expansive hydrophobic polyurethane grout, such as SealBoss® 1510 Water Stop Foam, is recommended. This approach effectively fills large voids, creating a solid mass that can serve as a stable foundation for subsequent hydrophilic gel injections if necessary.

The Stage Grouting Technique

The stage grouting technique is often recommended in such situations. This method involves injecting the product in measured stages with reduced volumes. Each stage is given adequate time to react and form a natural barrier, prior to injecting the next grout stage. This strategic layering and controlled application enhances the overall effectiveness of the grouting process, ensuring comprehensive coverage of product along the outside of the wall and optimal stability.

For in depth training training on specific injection techniques or on-site assistance, please reach out to your SealBoss® Technical Representative or contact the main office at 714-662-4445 for further support.

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